13 - 7 = (10 + 3) - 7 = (10 - 7) + 3 = 3 + 3 = 6
Answer:
13 units
Step-by-step explanation:

=
=
=
=13 units
Answer:
1. 1
2. 1
3. 16/81
4. 3
5. 3
Step-by-step explanation:
Answer:
-2(x^2+15)
Step-by-step explanation:
f(x) = −2(x − 4)^2 + 2.
Expanding (x-4)^2
(x-4)(x+4)
x(x+4)-4(x+4)
x^2+4x-4x-16
x^2-16
F(x) = -2(x^2-16)+2
-2x^2-32+2
-2x^2-30
-2(x^2+15)